A folding guardrail

Abstract

The utility model relates to the technical field of guardrails, and discloses a folding guardrail, which comprises a support frame, two rotating rods are rotatably installed in the support frame, a set of guardrails are fixedly installed on the two rotating rods, the inside of each guardrail is hollow and has an opening at one end, an extension rod is slidably sleeved in the inside of each guardrail, a screw rod is rotatably installed on the inner side wall of each of the two guardrails at the bottom, a threaded groove matched with the screw rod is formed in the surface of each of the two extension rods at the bottom, and the extension rod is screwedly installed on the corresponding screw rod through the threaded groove, the guardrail can be adjusted to expand the angle through the rotating rod and the locking assembly, is suitable for different scenes, and the extension rod can be driven to stretch out and retract through the operating rod and the screw rod, the length of the guardrail can be flexibly adjusted, the guardrail as a whole can be folded and the extension rod can be retracted, the storage volume is small, and the guardrail is convenient to transfer and store.

Description

Technical Field

[0001] This utility model relates to the field of guardrail technology, specifically a folding guardrail. Background Technology

[0002] Guardrails are mainly used in residential areas, highways, commercial areas, public places and other places to protect personal safety and equipment facilities. Guardrails are ubiquitous in our lives. The price per meter of guardrail varies depending on its height, and different types of guardrails undertake different protective tasks.

[0003] A folding guardrail, disclosed in publication CN 211597993 U, includes a base plate. The top of the base plate is welded with a first support column, a second support column, a first support rod, and a second support rod. The first support column is located between the second support column and the first support rod, and the second support column is located between the first support column and the second support rod. A locking plate is welded to one outer wall of the first support rod, and a fixing seat is welded to the outer wall of the second support rod away from the first support rod. This folding guardrail achieves installation and fixation of adjacent guardrails through the mutual engagement of the locking plate and the fixing pin. The rotation of the turntable allows for rotation between the two guardrails, facilitating adjustment of the installation angle while also enabling folding. This facilitates subsequent transportation and storage. Furthermore, the guardrail's opening method can be selected according to needs via internal baffles, facilitating opening and closing for temporary access.

[0004] However, the above-mentioned guardrails still have some shortcomings in use. Their length adjustment mostly relies on splicing and combination, lacking an integrated telescopic structure. It is difficult to flexibly adjust the coverage length of a single guardrail according to the protection range, which limits their adaptability. At the same time, it is difficult to adjust the installation angle between the guardrails according to the needs, and it is not convenient to fold, thus causing trouble for subsequent transportation and storage. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a folding guardrail that solves the problems of length adjustment relying on splicing and assembly, lacking an integrated telescopic structure, making it difficult to flexibly adjust the coverage length of a single guardrail according to the protection range, limiting adaptability, and making it difficult to adjust the installation angle between guardrails according to needs, which is inconvenient for folding and causes trouble for subsequent transportation and storage.

[0006] This utility model provides the following technical solution: a folding guardrail, including a support frame, two rotating rods are rotatably installed inside the support frame, and a set of railings is fixedly installed on each of the two rotating rods. Each railing is hollow inside and has an opening at one end.

[0007] Each of the railings has an extension rod slidably fitted inside. The two lower railings have screws rotatably installed on the inner sidewalls. The surfaces of the two lower extension rods have threaded grooves that match the screws. The extension rods are threaded onto the corresponding screws through the threaded grooves.

[0008] An installation box is fixedly installed on the upper surface of the support frame. The top ends of the two rotating rods extend into the interior of the installation box and are fixedly connected to positioning plates. A locking component is provided inside the installation box.

[0009] Preferred technical solution 1: The locking assembly includes a lead screw rotatably installed inside the mounting box, a lead screw sleeve threaded onto the surface of the lead screw, a pressure plate fixedly connected to the surface of the lead screw sleeve, two sets of positioning rods fixedly connected to the lower surface of the pressure plate, a positioning groove formed on the upper surface of each of the two positioning discs, a slide rod fixedly connected inside the mounting box, a slide sleeve slidably fitted onto the surface of the slide rod, and a fixed connection between the slide sleeve and the pressure plate.

[0010] Preferred technical solution 2: The surfaces of the two lower railings are each rotatably mounted with an operating lever. One end of each of the two operating levers extends into the interior of the connected railing and is fixedly connected to a first bevel gear. The surfaces of the two screws are fixedly sleeved with second bevel gears, and the two second bevel gears mesh with the two first bevel gears respectively.

[0011] Preferred technical solution 3: A row of vertical bars is fixedly connected between two corresponding railings, and a bracket is fixedly connected between one end of two corresponding extension bars.

[0012] Preferred technical solution four: The lower surfaces of the two upper extension rods are each provided with a row of grooves, and a telescopic rod is installed inside each groove via a damping shaft. One end of each telescopic rod is fixedly connected to a mounting block. The upper surfaces of the two lower extension rods are each fixedly connected with multiple fixing blocks corresponding to the mounting blocks. The surface of each fixing block is provided with a slot that matches the mounting block. Both the mounting block and the fixing block are provided with threaded holes and can be fixed with bolts.

[0013] Preferred technical solution five: a magnet is fixedly connected to the inner top wall of each groove, and each mounting block is made of iron.

[0014] Compared with existing technologies, this utility model provides a folding guardrail with the following advantages: In use, a stable support base is first provided by the support frame. When the guardrail's unfolding angle needs adjustment, the screw can be rotated to move the screw sleeve along the screw axis, thereby causing the pressure plate and positioning rod to move synchronously. When the positioning rod is inserted into the positioning groove on the upper surface of the positioning plate, the position of the rotating rod is locked, thus fixing the guardrail's unfolding angle. If the guardrail length needs adjustment, the operating lever can be rotated to rotate the first bevel gear, which in turn rotates the screw. The rotation of the screw causes the extension rod to slide along the inside of the guardrail, achieving the extension and retraction of the guardrail length. After the guardrail is unfolded and the length adjusted, if enhanced protective stability is required, the telescopic rod, installed in the groove via a damping shaft, can be rotated out. The telescopic rod is extended, with one end's mounting block inserted into a slot on the surface of the fixing block. Bolts are then used to secure the rod through the threaded holes on both the mounting and fixing blocks. To fold and store the railing, first remove the bolts between the mounting and fixing blocks, then retract the telescopic rod and use a magnet to retract the mounting block back into the groove. Next, rotate the operating lever in the opposite direction to retract the extension rod into the railing. Finally, rotate the screw in the opposite direction to disengage the positioning rod from the positioning slot. Rotating the rotating rod then folds both railings towards the support frame, completing the folding and storage of the railing. This railing allows for adjustment of the unfolding angle via the rotating lever and locking assembly, adapting to different scenarios. The operating lever and screw drive the extension rod to extend and retract, flexibly adjusting the protective length. The entire railing is foldable, and the extension rod can be retracted, resulting in a small storage volume that facilitates transport and storage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional exploded view of the internal structure of the mounting box of this utility model;

[0017] Figure 3 This is a cross-sectional view of the internal structure of the extension rod of this utility model;

[0018] Figure 4 This is a cross-sectional view of the internal structure of the railing of this utility model.

[0019] In the diagram: 1. Support frame; 2. Rotating rod; 3. Railing; 4. Extension rod; 5. Screw; 6. Mounting box; 7. Positioning plate; 8. Lead screw; 9. Lead screw sleeve; 10. Pressure plate; 11. Positioning rod; 12. Positioning groove; 13. Sliding rod; 14. Sliding sleeve; 15. Operating lever; 16. First bevel gear; 17. Second bevel gear; 18. Vertical rod; 19. Bracket; 20. Telescopic rod; 21. Mounting block; 22. Fixing block; 23. Magnet. Detailed Implementation

[0020] Please see Figure 1-4 ,

[0021] Example 1: A folding guardrail includes a support frame 1, with two rotating rods 2 rotatably installed inside the support frame 1. A set of railings 3 is fixedly installed on each of the two rotating rods 2. Each railing 3 is hollow inside and has an opening at one end.

[0022] Each railing 3 has an extension rod 4 slidably fitted inside. The inner side wall of the two lower railings 3 is rotatably installed with a screw 5. The surface of the two lower extension rods 4 is provided with a threaded groove that matches the screw 5. The extension rod 4 is threadedly installed on the corresponding screw 5 through the threaded groove.

[0023] The upper surface of the support frame 1 is fixedly mounted with an installation box 6. The top ends of the two rotating rods 2 extend into the interior of the installation box 6 and are fixedly connected to positioning plates 7. The interior of the installation box 6 is equipped with a locking component.

[0024] Example 2: The difference between this example and Example 1 is that the locking assembly includes a lead screw 8 rotatably installed inside the mounting box 6, a lead screw sleeve 9 threaded onto the surface of the lead screw 8, a pressure plate 10 fixedly connected to the surface of the lead screw sleeve 9, two sets of positioning rods 11 fixedly connected to the lower surface of the pressure plate 10, a positioning groove 12 formed on the upper surface of each of the two positioning discs 7, a slide rod 13 fixedly connected inside the mounting box 6, a slide sleeve 14 slidably fitted onto the surface of the slide rod 13, and a fixed connection between the slide sleeve 14 and the pressure plate 10.

[0025] Example 3: The difference between this example and Example 1 is that, in this example, the surfaces of the two lower railings 3 are rotatably mounted with operating rods 15, one end of each operating rod 15 extends into the interior of the connected railings 3 and is fixedly connected with a first bevel gear 16, and the surfaces of the two screws 5 are fixedly sleeved with second bevel gears 17, and the two second bevel gears 17 mesh with the two first bevel gears 16 respectively.

[0026] Example 4: The difference between this example and Example 1 is that a row of vertical bars 18 is fixedly connected between the two corresponding railings 3, and a bracket 19 is fixedly connected between one end of the two corresponding extension bars 4.

[0027] Example 5: The difference between this example and Example 1 is that the lower surfaces of the two upper extension rods 4 are provided with a row of grooves, and each groove is fitted with a telescopic rod 20 through a damping shaft. One end of each telescopic rod 20 is fixedly connected to a mounting block 21. The upper surfaces of the two lower extension rods 4 are fixedly connected with multiple fixing blocks 22 corresponding to the mounting blocks 21. The surface of the fixing blocks 22 is provided with slots that match the mounting blocks 21. Both the mounting blocks 21 and the fixing blocks 22 are provided with threaded holes and can be fixed with bolts.

[0028] Example 6: The difference between this example and Example 1 is that each groove has a magnet 23 fixedly connected to its inner top wall, and each mounting block 21 is made of iron.

[0029] In summary, when using this folding guardrail, the support frame 1 provides a stable support base. When the guardrail unfolding angle needs to be adjusted, the screw 8 can be rotated to move the screw sleeve 9 along the axial direction of the screw 8, thereby causing the pressure plate 10 and the positioning rod 11 to move synchronously. When the positioning rod 11 is inserted into the positioning groove 12 on the upper surface of the positioning plate 7, the position of the rotating rod 2 is locked, thus fixing the unfolding angle of the guardrail. If the guardrail length needs to be adjusted, the operating rod 15 can be rotated to rotate the first bevel gear 16, thereby rotating the screw 5. The rotation of the screw 5 will cause the extension rod 4 to slide along the inside of the guardrail 3, realizing the extension and retraction of the guardrail length. After the guardrail is unfolded and the length is adjusted, if it is necessary to enhance the protective stability, the telescopic rod 20, which is installed in the groove through the damping rotating shaft, can be rotated out, and then the telescopic rod 20 can be stretched to extend the mounting block 2 at one end. 1. Insert the mounting block 21 into the slot on the surface of the fixing block 22, and then fix it by passing the bolt through the threaded holes on the mounting block 21 and the fixing block 22; when it is necessary to fold and store the guardrail, first remove the bolt between the mounting block 21 and the fixing block 22, retract the telescopic rod 20 and use the magnet 23 to attract the mounting block 21 back into the groove, then rotate the operating rod 15 in the opposite direction to make the extension rod 4 retract into the guardrail 3, and finally rotate the screw 8 in the opposite direction to make the positioning rod 11 disengage from the positioning groove 12, and rotate the rotating rod 2 to drive the two sets of guardrails 3 to fold towards the support frame 1, thus completing the folding and storage of the guardrail; the guardrail can adjust the unfolding angle through the rotating rod 2 and the locking component to adapt to different scenarios, and at the same time, it can drive the extension rod 4 to extend and retract with the help of the operating rod 15 and the screw 5 to flexibly adjust the protective length. The whole can be folded and the extension rod can be retracted, with a small storage volume, which is convenient for transportation and storage.

Claims

1. A folding guardrail, comprising a support frame (1), characterized in that: The support frame (1) has two rotating rods (2) rotatably installed inside. Each of the two rotating rods (2) has a set of railings (3) fixedly installed on it. Each railing (3) is hollow inside and has an opening at one end. Each of the railings (3) is slidably fitted with an extension rod (4). The two railings (3) located below are rotatably fitted with screws (5) on one side wall of their interior. The surfaces of the two extension rods (4) located below are provided with threaded grooves that match the screws (5). The extension rods (4) are threadedly installed on the corresponding screws (5) through the threaded grooves. The upper surface of the support frame (1) is fixedly mounted with an installation box (6), the top ends of the two rotating rods (2) extend into the interior of the installation box (6) and are fixedly connected with positioning discs (7), and a locking component is provided inside the installation box (6).

2. A folding guardrail according to claim 1, characterized in that: The locking assembly includes a lead screw (8) rotatably installed inside the mounting box (6), a lead screw sleeve (9) threaded onto the surface of the lead screw (8), a pressure plate (10) fixedly connected to the surface of the lead screw sleeve (9), two sets of positioning rods (11) fixedly connected to the lower surface of the pressure plate (10), a positioning groove (12) is opened on the upper surface of each of the two positioning discs (7), a slide rod (13) is fixedly connected inside the mounting box (6), a slide sleeve (14) is slidably fitted onto the surface of the slide rod (13), and the slide sleeve (14) is fixedly connected to the pressure plate (10).

3. A folding guardrail according to claim 1, characterized in that: Operating levers (15) are rotatably mounted on the surfaces of the two lower railings (3). One end of each operating lever (15) extends into the interior of the connected railing (3) and is fixedly connected to a first bevel gear (16). A second bevel gear (17) is fixedly sleeved on the surfaces of the two screws (5). The two second bevel gears (17) mesh with the two first bevel gears (16) respectively.

4. A folding guardrail according to claim 1, characterized in that: A row of vertical bars (18) is fixedly connected between the two corresponding railings (3), and a bracket (19) is fixedly connected between one end of the two corresponding extension bars (4).

5. A folding guardrail according to claim 1, characterized in that: The two upper extension rods (4) each have a row of grooves on their lower surfaces. Each groove has a telescopic rod (20) installed inside it via a damping shaft. One end of each telescopic rod (20) is fixedly connected to a mounting block (21). The upper surfaces of the two lower extension rods (4) each have multiple fixing blocks (22) corresponding to the mounting blocks (21) fixedly connected to them. The surface of the fixing blocks (22) has a slot that matches the mounting blocks (21). Both the mounting blocks (21) and the fixing blocks (22) have threaded holes and can be fixed with bolts.

6. A folding guardrail according to claim 5, characterized in that: Each of the grooves has a magnet (23) fixedly connected to its inner top wall, and each of the mounting blocks (21) is made of iron.

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